| Numerical analysis on car-following traffic flow models with delay time |
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| 作者姓名： | 李莉 施鹏飞 |
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| 作者单位： | Institute of Image Processing and Pattern Recognition Shanghai Jiao Tong University Shanghai 200030 China，Institute of Image Processing and Pattern Recognition Shanghai Jiao Tong University Shanghai 200030 China |
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| 基金项目： | Project (No. G1998030408) supported by the National Basic Re-search Program (973) of China |
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| 摘 要： | INTRODUCTION For the past few decades, many researchers have made studies of modelling driver behavior to repro- duce the observed features of traffic flow. Recently Kerner and Rehborn (1997) observed that there are three distinct dynamic phases on highways: free traf- fic flow, coexisting traffic flow and traffic jams. The occurrence of traffic jams without obvious reasons had been explained in terms of the conventional phase transition (Nagatani, 1998). Various traffic flow models, suc…
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| 关 键 词： | 车辆交通流模型 数值分析 延迟时间 松驰时间 相变 |
| 收稿时间： | 2004-11-17 |
| 修稿时间： | 2005-03-03 |
Numerical analysis on car-following traffic flow models with delay time |
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| Li Li,Peng-fei Shi.Numerical analysis on car-following traffic flow models with delay time[J].Journal of Zhejiang University Science,2006,7(2):204-209. |
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| Authors: | Li Li Peng-fei Shi |
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| Institution: | (1) Institute of Image Processing and Pattem Recognition, Shanghai Jiao Tong University, Shanghai, 200030, China |
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| Abstract: | Effects of the speed relaxation time on the optimal velocity car-following model (OVM) with delay time due to driver reaction time proposed by Bando et al.(1995) were studied by numerical methods. Results showed that the OVM including the delay is not physically sensitive to the speed relaxation times. A modified car-following model is proposed to overcome the deficiency. Analyses of the linear stability of the modified model were conducted. It is shown that coexisting flows appear if the initial homogeneous headway of the traffic flow is between critical values. In addition, phase transitions occur on varying the initially homogeneous headway. |
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| Keywords: | Car-following models Delay time Relaxation time Phase transitions |
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